Because metal materials may more accurately represent product quality and showcase brand value, they are being utilised in a growing number of current items. Aluminum alloy is one of several metal materials that is simple to work with and has attractive aesthetic effects. There are many different surface treatment techniques, and many manufacturers use the pioneering ones. Sandblasting creates a matte pearl silver surface for aluminum alloy die castings. Polishing creates a mirror surface. Wire drawing creates a satin-like appearance. Electroplating covers a layer of other metals. Spraying creates a satin-like finish (covering other non-metallic coatings)
1，Sandblasting (shot peening)
the method of employing high-speed sand flow to clean and roughen the surface of aluminum alloy die castings. The mechanical qualities of the casting surface can be improved, increasing adhesion between the casting and the coating while also achieving a particular level of cleanliness and varied levels of roughness on the surface of aluminum alloy die castings. Adhesion helps the coating layer last longer and is beneficial for coating leveling and decorating.
2, Polishing
reducing the surface roughness of aluminum alloy die castings using mechanical, chemical, or electrochemical techniques to produce a bright and smooth surface. The three basic categories of polishing are electrolytic, chemical, and mechanical polishing. To mimic the mirror look of stainless steel, aluminum alloy die-casting components use mechanical polishing and electrolytic polishing. This gives consumers a sense of high-end simplicity, fashion, and the future (of course, it is easy to leave fingerprints and more care should be taken).
3. Wire drawing
Aluminum alloy die castings are regularly scraped off of lines during the manufacturing process of metal wire drawing. There are several types of drawing, including thread drawing, spiral drawing, random drawing, and straight drawing. The fine silk fibers can be seen clearly in the metal matte thanks to the metal wire drawing procedure, which also makes the product appear both fashionable and technologically advanced.
4. High light cutting
When cutting aluminum alloy die-casting components and producing local highlighted regions on the product surface, Jingdiao machines are used to strengthen the diamond knives on their spindles, which rotate at high speed (often 20,000 rpm). The milling drill bit's speed has an impact on how brilliant the cutting highlight is. In contrast, if the drill speed is slower, the cutting highlight is darker and easier to form knife lines.
5. Anodizing
The process of electrochemically oxidizing metals or alloys is known as anodizing. Under the right electrolyte and process conditions, aluminum alloy die-castings develop an oxide film layer on aluminum products (anodes) when an external current is applied. Anodizing may improve the appearance and extend the service life of aluminum alloy die castings in addition to correcting surface hardness and wear resistance issues. It has grown to be an essential component of die castings made of aluminum alloy's surface treatment. It is now the most popular and effective procedure.
6. Two-color anodizing
Two-color anodizing is the process of anodizing a single aluminum alloy die casting and applying multiple colors to selected locations. Due to the intricate procedure involved, two-color anodizing is expensive, but the contrast between the two colors can better capture the premium quality and distinctive appearance of the product.